Valve



J. D. BALDWIN, JR 7 2,078,048

VALVE April 20, 1-937.

OriginalFiled April 27, 1932 Srwentor AW 54L0/V/N. J/E.

a I I By gr Patented Apr. 20, 1937 VALVE John D. Baldwin, J12, Cleveland, The Weatherhead Company,

a corporation of Ohio Original application April 27,

1934, Serial No. 723,042

2 Claims.

This invention relates to valves, and this application is a division of my application Serial No. 607,787, filed April 27, 1932, which has resulted in Patent No. 1,956,554, issued May 1, 1934.

The invention is particularly adaptable to a dual valve of a type frequently employed in refrigeration systems. Such a valve has two independent passages leading therethrough, each controlled by a separate closure member, and both passages extending side by side through a common branch which is adapted to be threaded into or otherwise put incommunication with a single vessel, such as the receiver for a mechanical refrigerator, which those skilled in the art know contains both liquid and gas. In using my valve one of its passages communicates with the liquid in the lower part of the receiver through a tube brazed into the passage and the other passage is in open communication with the upper or gaseous part of the vessel or receiver.

In designing my valve it was my desire to incorporate in a compact valve body valve stems and closure members, each readily accessible, and independently operable to control the flow of fluid into and out of the said vessel or receiver, and also to provide means for joining the separate passages with separate tubes or conduits communicating with other elements in the system.

Thus it is among the objects of my invention to provide a compact and inexpensive dual valve. Another object is to arrange the passages, seats. stems and connections in the most compact yet accessible relation, so that a minimum amount of metal need be employed, a minimum waste entailed and a minimum machine work required in the production of my valve, consistent with ample strength, durability, accessibility, good appearance and safety. Another object of this invention is to combine a valve body fashioned from extruded or drawn bar stock that may be produced at a lesser cost than forgings or cast ings, yet will be possessed of all the qualities of a forging or casting as regards to strength, durability and efficiency.

Other objects and advantageous features of the invention will be noted in the following detailed description and accompanying drawing, wherein like characters of reference designate corresponding parts and wherein:

Figure 1 is a perspective view of a bar of extruded and drawn stock from which the blank shown in Figure 2 is severed, the blank being shown after the machining operation of forming an extension, circ at an obtuse angle to t Figure 2 is a view in illustrated in Figure have been performed t Figures 3, 4, 5

Ohio, assignor to Cleveland,

Ohio,

1932, Serial No.

Divided and this application April 30,

P P 1, after and 6 in section illustrating various ing of the valve Figure 7 is a valve body and c therewith; and

Figure 8 is a Figure 6.

In carrying and referring to my novel valve body;

ular in cross section, extending he main body;

ective of the blank certain operations hereon;

are views in elevation and steps in the maksectional view illustrating the view in the drawing, comprises a ooperating parts assembled section on line 8-B of out the objects of my invention it will be seen that pair of cylindrical portions merging into a common body having a cylindrical by which it was to be made.

lateral branch terminating adjacent to but ofiset from one of the evolved this design portions. I have of valve having in mind both e and the method Thus with this design I am able to form bar stock by such means as extruding and for example, as

trated in Figure 1, drical, or partially cy into and oppositely 0 tion. It will further be s cylindrical portions are drawing brass having the which comprises lindrical, portions merging or rolling metals, such shape illusa pair of cylinffset from a rectangular poreen that the axes of the respectively above and below the central plane of the bar and are respectively disposed near and tangular portion of in Figures 1, 2 and drical portions are inc lateral median plane Having forme shown in Figure ess, I next sever its axis into len valve body, as v1 blank having been the rectangular plane tangent to portion, leaving branch which to and from w In this stage, at

process, the valve Figure 2.

enough portion to perm is externa threads for attachment into the bar.

d the 1, as the the bar in portion subst ths equal to the ewed in Figures so severed I remove part of far from the rec- It will also be seen 8 that the axes of the cylinlined with relation to the of the body of the bar.

bar stock in the shape first step of my proca plane normal to height of the 3 and 4. The

antially down to a the centrally located cylindrical normal to such lly provided with pipe the vessel, the flow ch is controlled by my valve.

plane a lateral the end of the second step of my it of the ext has the appearance shown in producing the finished exthe step of turning away ds of the cylindrical ernal threading of these portions for reception of cap nuts 29, see Figure 7, which enclose the exposed ends of the valve stems and seal these portions of the valve against any chance of leakage along the valve stems. With the completion of the external threading of these ends of the cylindrical portions, shown at the top in Figure 3 and bottom in Figure 4, the last step of my process as to exterior formation has been taken and the valve body has thereupon assumed its finished exterior appearance.

Those skilled in the art will understand that it is not mandatory nor necessarily expedient to perform the three foregoing steps in the order named, without interrupting the sequence of steps by other operations such as drilling, boring or tapping on the inside of the valve body. I have discussed the three preceding steps to illustrate the correlation of my shape of the finished product to show how vitally and effectively dependent is the shaping of the rod or bar stock related to the contour of the finished product. It is by this cooperative relationship that I save material, time and eifort as well as provide 'a compact and novel finished product as will more fully appear in discussing the subsequent steps of my process and the structure of the finished valve.

Passing now from the formation. of the exterior of the valve, which now comprises parallelcylindrical portions 2 and 3 with their axes spaced apart and-lying in a plane inclined to the axis of the branch 5, to the interior of the valve, I form parallel axial passages l5, drilled, bored, counter-bored and tapped as shown in the several figures, particularly Figure 3. The passages being preferably exactly alike, include at I! squared shoulders forming seats for the two valves; at I6 internally threaded Walls for engaging the threads M on the valve stem (see Figure 7) which cooperate with the valve stems 25 and 26 for the usual purpose.

The ends of. the cylindrical portions 2 and 3 adjacent the packing glands are beveled and sharpened to form a seal with the cap nuts 29 as such as a copper tube along with the male member of such a coupling and form a fluid tight joint with said tubing. I

Thus the cylindrical portions 2 and 3 each include (see Figure 7) a female member of a tube coupling, a fluid passage 5, a valve seat IT, a valve stem 25 or 26, a packing ring and gland 21 and 28 and sealing brim for the separate cap nuts. It remains to consider now to establish fluid communication between the separate passages rifice of utility or efiiciency of manufacture.

Referring particularly to Figure 8, it will be seen that the additional passages 2| and 22 can drilled normal to the plane of tangency to the inner cylindrical portion and parallel to the axes of the branch 5. Preferably the passage 2| has one wall substantially tangent to the passage IS in the inner cylindrical portion 3. Preferably also the passage 22, which in this particular embodiment is larger than the passage 2|, has its axis substantially tangent to the wall of the passage l in the cylindrical passage 2, whereby the end of the passage 2 is extended slightly beyond the center of the passage l5, as shown in Figure 8. The passages 2| and 22 have been related to each other in size and disposition within the branch 5 because of the duty imposed upon them in the particular use in which I have employed this valve, that is, the passage 2| was intended to convey liquid, as mentioned above, directly from the bottom of the vessel or receiver into which the branch 5 is threaded in fluid tight connection, while the passage 22 conveys fluid and'gas to the top of such receiver. The passage 2| is counter-bored as at 23 to receive the end of a tube or conduit'which may be brazed therein or otherwise sealed and lead therefrom to the bottom of the vessel mentioned above.

Referring also to Figures 5, 6 and 7, the relationship and points of contact between the passages |5-, 2| and 22, can be observed from different points of view, it appearing particularly in Figure 7 that as eitherof the valve stems 25 or. 26' are rotated so as to back the stems away from the seats" that fluid communication is'established in one instance through one of the passages |5and the passage 2| and in the other instance through the other of the passages l5 and the passage 22.

From. the foregoing, it will appear that I have provided. a novel dual or plural valve which is most compact, economical as to material cost and economical of machine work and finished operations in its manufacture. It will also appear that my novel design and arrangement 01 common branch the axis of the now Patent No. 1,956,554.

While the foregoing has constituted a description of a preferred embodiment of'my invention, I appreciate that modifications and changes all within the scope of the major precepts thereof may occur to those skilled in the art and I do not limit myself to the specific embodiment disclosed herein or in any manner other than by the claims appended hereto.

I claim:

1. A multiple valve body having a plurality of valve stem and closure embracing cylindrical portions merging into the body thereof each having an axial longitudinal passage communicating spaced lateral passages extending parallel to the axis of said connector and communicating with and substantially tangent to the said longitudinal passages in said cylindrical portions.

2. A multiple valve comprising a body having two parallel cylindrical portions provided with axial passageways, valve seats formed in said passageways and valve stems threaded into said passageways, and a transversely extending threaded cylindrical projection, said parallel cylindrical portions being unequally spaced from the end of said cylindrical projection, said cylindrical projection having a pair of parallel fluid conducting passages therein terminating in substantially the same plane extending from the end of said cylindrical projection to said first-named passageways.

JOHN D. BALDWIN, JR. 

